Planoqrapm co



A. L. HANSEN.

ACETYLENE LAMP.

APPLxcApoN FILED MAY 6. 1918.

Patented July 22, 1919.

llllllll TME COLUMBIA PLANOURAPH CO.. WASHINGTON, D. C.

AUGIE L.. HANSEN, OF EVANSTON, ILLINOIS.

ACETYLENE-LALMP.

Specification of Letters Patent.

Patented Junyl 22, 1919.

Application led May 6, 1918. Serial No. 232,774.

To all whom t may concern.' i l e Be it known that I, AUGIE L. HANSEN, a citizen of the United States, residing at Evanston, in the county of Cook, State of Illinois, and having a postfof'rice address at No. 2108 Lincoln street, Evanston, Illinois, have invented'certain new and useful Improvements in acetylene-Lamps, of which v`the following is a full, clear, and exact description. l

.e Mylnventlon relates to various new and useful Improvements in acetylene lamps and the improvements have been particularly de- .V signed for 4use. in connection with small i miners cap lamps. In Letters Patent of the United v States No. 1,162,915, `dated December 7 1915, I described `certain improvements inacetylenelamps and in the development of that lamp I `found that certain imc resultsare `not,secured when the water, is,

provements therein are desirable. In my patented lamp I dispensed entirely with the usual centrally arranged water tube and instead I made use ofa short water tube leading from the water reservoir to the threaded connection between the carbid chamber and the upper part of thelamp, whereby the water before it reached the carbid followed the screw-threads upwardly so as to .flow over the edge of the neck of the carbid chamber and thus enterethe carbid chamber as a film-orthin stream flowing down uponV the inside of the Acarbid chamber vto thus reach 'the carbid. a i With my` .patented lamp, notwithstanding the smallfhydrostatic head, a comparatively high gas pressure was per-A mitted to develop in the carbidfch'amberbe cause in order that the water might be forced back into the water reservoir, it was necesj sary for it to be backed'up through the very thin passage formed between the threads .on

the neck of the carbid chamber and `the de-V pending flange respectively. In the construction and operation of the patented lamp `I discovered opportunity f or improvement.

In thefirst place, I found that there was some danger, when'the lamp was in use, of water. being shakeno of the of the carbid chamber when the lamp was suddenly jolted bythe miner so that thewater in com-` paratively large drops would be thrown out into the carbid, resulting inover-generation of gas and in an objectionable-variation `of the-flame.` I also discovered thatv the best carbid, so that the operation of evaporation' and` condensation continues to take place. With any carbid lamp there is a certain amount of evaporation. and condensation, but when water is fed to carbid from the top downward, the condensation is greater. Too muchwater in the carbid chamber also objectionably saturates the usual felt filter and interferes with theproperfiltering of the gas to theburner. The amount of water evaporated in the carbid chamber should notbe in excess of the absorbing capacity ofthe usual felt filter pad used in these lamps. V e

To improve the lamp in these respects, I have designed my present lamp with a sleeve or apron located on the inside of the carbid chamber and forming a thin y'channel through which the water may pass so as to reach the carbid well below its top surface. e This sleeve or apron carries the threaded neck by which the carbid chamber is securely screwed to the top of the lamp. The packing loe-V tween the carbid chamber and the top of the lamp .is a rubber gasket interposed on the outside between the carbid chamber and an inclined iangeV at the bottom .of the lamp top. By locating the packing at this point no possible leakageof gas can take place. In my improved lamp, the water from the Water reservoir is introduced into the space .drops when more water is needed. Thus the liow of water from the reservoir takes place intermittently, being controlled by the gas pressure. d

,It is important, .of course, that there should not beV an `objectionable choking of thewater space between the sleeve or apron an-d carbid chamber. Ordinarily this water space'presents such a great area, notwithstanding the close proximity of its opposed Walls that. even when. .very '.Consderwbly clogged',- aumcient opportunity is sacred. for

the feed oi' water to the carbid, since only a minute quantity of water is' necessary to operate these lamps. In time, however, there might be complete clogging of the water space between the sleeve or apron and the carbid chamber, and therefore to prevent this, I arrange the sleeve or apron and carbid chamber so that there may be a relative movement ci these parts whenever the caibid chamber is engaged or disengaged from the top and, if' desired, this relative movement may lbe effected at any time during the operation of the lamp by slightly twisting the carbid chamber back and forth. In other words," the sleeve or apron and carbid chamber are 'so associated that the latter inaybe given fa partial turn backward or forward without distur-biiig the engagement .of the threaded connection between the neck of the sleeve or apron and the top, and,

'of course, the gas seal is not disturbedl because in this movement there is no relative separation of' the carbid chamber with frespect to the top. To this end, I provide the sleeve or apron and carbid chamber with interlocking abutments which will come into engagement when` the carbid chamberhas been twisted to a predetermined extent. Afterward the carbid chamber and sleeve or apron will move together as a whole tol permit the threaded connection to be made orseparated as the case may be.

In order that my invention may be better understood, attention is directed to the ac- 'larged scale, for the purpose ot' more clearly illustrating the lower part of the water tube with its controlling valve.

Fig. 3, a cross-section on the line 3 3 olf Fig: 1, showing particularly the locking abutinents.

Fig. 4.-, a plan view or' the threaded sleeve or apron.

Fig. 5, aside view of the same,.and l Fig. 6, a detail view on the same scale as `Fig. showing the arrangement of the lower end of the water tube. v

In the above views, corresponding parts are indicated by the saine reference nunierals.

The top 1, of the lain-p contains the waterreservoir 2, having the vented filling cap 3, and in thefront of the top is the reflector 4, with burner tip 5 to which lead-s the tube G, passingthrough the bottom wall of the.

water reservoir and with its lower end protected by' a f'elt filter pad 7, removably held in place by a sheet metal clip 8,. all as wellknown `in the art. The top 1 is provided Vwith the usual flange y9, between which and the inclined shoulder of the carbid chamber 10 is interposed a packing 111, generally a rubber gasket.

v With acetylene lamps as heretofore made, the carbid chainiber has been directly attached to the top 1, usually by a screwthreaded connection. TvVith my improved acetylene lamp, I make use of a sleeve or apron 12, having a threaded neck 13 which engages with the usual screw threads 14 on the lamp top. The sleeve or apron fits the inside of the carbid chamber quite snugly, the space separating the -two being somewhat exaggerated in the drawing for the purposes of clearness. In practice this water space is suflicien-tly contracted to permit water to iiow down the same as a thin sheet or film with a retarded or substantially capillary effeet as distinguishedV from a free unimpeded flo-w.V In this way I am able to reduce the rate of flow sufficiently so that when the gas pressure drops, the desired minute quantity of water will enter the carbid. In the operation of ythese lamps, it is important that when 'a Vfeed of the water takes place, it shall bea very small quantity, since if the water is allowedl to enter .the carbid chamber in aV length of the flame. Furthermore, by pro-H viding a ycapillary space between the sleeve or apron and the carbid chamber, a substantial retardation is voffered to the return movement of the water in addition to the added length of the hydrostatic head as com-` pared Ato the lamp of my patent referred to. Thus it becomes possible 4to burn the lamp y under rela-tively high pressure since, after the feed has been arrested, the gas pressure may increase to the point Where the gas has forced the water upwardly andl escapes through the water reservoir.

In order to prevent the closing of` the water space between the shoulder of the sleeve or apronand the flange oi' the carbid chamber when these parts are tightly pressed together in screwing Athe carbid chamber in` place, I form the sleeve or apron on its shoulder with a number :of shallow ribs 15,

between which are channels 16 through which the water may pass, as will be obvious. I also illustrate the sleeve 12'as, being provided with two diametric ribs 17, vtting the inner wall of the carbid chamber and I also show the carbid chamber as formed with two diainetricribs, 18,4projectiiig inwardly and wire 27 projecting through the water chanteredwith vrespect to theA carbid chamber so as to preserve the concentricity. of the water space between the two. The principal function of these ribs 17 and 18 is to limit the-twisting movement of the carbid chamthe ribs or abutments engage, whereupon the threaded neck` of the sleeve or apron will be forced into engagement with threads 14. At any time during the operation of the lamp, the carbid chamber may be given a short twisting movement back and forth without disturbing the screw-threaded connection with the lamp top. By thus providing a lamp in which the carbid chamber,

whenever it is placed in position or removed,

will be moved relatively to the sleeve or apron, I keep the water passage entirely clear and open and prevent any possibility of clogging by carbid particles or by any sediment which may be contained in the water. The cleaning'of the water channel therefore takes place automatically whenever a new charge of carbid is introduced, although, if desired, should the llame betcome unsteady, due to clogging, the water space may be cleaned. as described during the operation of the lamp. In assembling the sleeve or apron within the carbid chamber, it is introduced from the bottom upward and to permit it to pass the ribs 18 it is formed with two notches or nicks 20 thus allowing the ribs 18 to enter the depressed panels 19 between the ribs 17. After the sleeve or apron has thus been inserted in place, a bead 21 is stamped or otherwise lformed in the carbid chamber to act as a stop to prevent the sleeve or apron from dropping down. Finally, inthe assembling operation, the bottom 22 of the carbid chamber is soldered or otherwise secured in place.

Water from the reservoir 2 flows down a channel 23 into the space between the sleeve or apron 12 and the carbid chamber. Preferably the metal is cut away as at 24 (Fig. 6) around the discharge of the water channel 23 so as to permit unimpeded water 'How at this point and reduce the dan@r r of clogging and at the same time ajltdving any accumulated sediment to be easily removed. The upper end of the water channel 23 constitutes a valve seat with which cooperates a valve 25 operated by a handle 26. This valve is of any suitable type; it performs the usual function of regulating the rate of How of the water. Extending downwardly through the valve tube is the usual neli23 'and serving not only'to restrict" and retardV the flow of water, but also Akeeping the water channel clean at all times. from the reservoir enters the valve chamber through the slot 28 in the usual way.

Having now described my invention, what I claimA as new therein and desire to secure by LettersPatent, is as follows:

1. In an acetylene lamp, the combination with a carbid chamber and a water reservoir, of a sleeve or apron in the carbid chamber and engaging the saine and forming an annular contracted water passage extending well within the carbid chamber', a connection 'between said sleeve or apron Water i and the water reservoir -by which the carbid i chamber and water reservoir will be securely held together and a water conduit leading from the reservoir to said contracted annular passage, substantially as andfor the purposes set forth.

2. In an acetylene lamp, the combination with a carbid chamber and a water reservoir, of `a sleeve or apron in the carbid chamber and engaging the 'same and forming an annular contracted water passage extending well within the carbid chamber, a screw threaded connection between said sleeve or apron and reservoir by which the carbid chamber and water reservoir will be securely held together and a water conduit leading from the reservoir to said contracted annular passage, substantially as and-for the purposes set forth.

3. In an acetylene lamp, the combination with a carbid chamber and a water reservoir, of a sleeve or apron in the carbid chamber and engaging the same and forming an annular contracted water passage extending lwell within the carbid chamber, a connection between said sleeve or apron and Water reservoir by which the carbid chamber and water reservoir will be securely held together, a water conduit leading from the water reservoir to said contracted annular passage, and the gas seal between the carbid chamber and the reservoir outside of said sleeve or apron, substantially as and for the purposes set forth.

4.1m an acetylene lamp, the combination with a carbid chamber and a water reservoir, of a sleeve or apron in the carbid chamber and engaging the same and forming an annular contracted water passage extending well within the carbid chamber, a screw threaded connection between said sleeve or apron and water reservoir by which the carbid chamber and water reservoir will be securely held together, a water conduit leading from the water reservoir to said contracted annular passage, and a gas substantially as .and for the purposes set forth.

5. In an acetylene lamp, the combination with :a carbid chamber and a waterl reser- Voir, of a sleeve or apron on the inside of the carbid chamber and engaging the same and forming a contracted annular Water channel, a connection between the sleeve or apron and the Water reservoir, a water con# duit leading from the water reservoir to said annu-lar passage and interlocking abutments on the carbid chamber and sleeve respectively, whereby there may be a relative movement of the carbid chamber and sleeve until said abutments engage and thereafter the carbid chamber and sleeve will move toy gether7 substantially as and for the purposes set forth. Y

6.111 an acetylene lamp, the combination ofthe carbid chamber and a water reservoir of a sleeve or apron on the inside of and engaging the carbid chamber and between which and the carbid chamber a con- Yfor the purposes set forth.

tracted water passage is formed, said carbid y chamber and sleeve being movable relatively and circumferentially, substantially as and 7. In an acetylene lamp, thevcombination with the carbid chamber andA a'water reservoir, of a sleeve or apron on the insideV of and engaging the carbid chamber andrbe- Y tween which and the carbid chamber a con- 30 AUGIE L. HANsEN. Witnesses A. E. RENTON, ABRAHAM FAs'roNE.

Copies o! this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

` Washington, D. C. 

